Welcome to the SR family!
you will find support and information here.
We understand what it is like living with a loved ones alcoholism.
Alcoholism is progressive. It gets worse.
I agree with Laurie that you need to protect yourself and your property ( and any other family members or visitors).
What he is doing is against his probation, and he is doing it on your property. Let the authorities deal with the issue. He is an adult and can face the consequences of his behavior.
Unfortunately, you wont be able to reason with an addicted personality. As long as he is drinking, he will do anything to protect his addiction. Alcohol is his priority and he will defend it.
Please make yourself at home by reading and posting as much as you need. We are here to support you.